Probably, but only where it accurately describes information already visible on the website and supports a current search feature or clear business need. Structured data is useful labeling, not a shortcut to rankings, and outdated or conflicting markup can create more confusion than value.
What structured data actually does
Structured data is code that labels information such as the company name, website, logo, address, hours, or type of organization. Schema is the shared vocabulary used for those labels. Customers may never see the code, but the facts it describes should match what they can see on the page.
Google's LocalBusiness and Organization guidance can help a website clarify business identity. Use the most specific accurate type available. A roofing company shouldn't choose a different business type because it sounds more valuable.
Don't confuse valid code with a guaranteed result
Google says valid markup can make a page eligible for supported search features. Eligibility doesn't guarantee that a rich result will appear, and structured data doesn't guarantee higher rankings. Google has also retired several lesser-used search displays over time without changing the page's underlying ranking.
That is why adding every possible field is the wrong goal. Keep the labels that are accurate and maintained. Remove or update code built only for a feature that no longer exists after confirming that another system doesn't rely on it.
How duplicate markup creates trouble
Imagine a landscaper's website theme publishes one phone number, an SEO plugin publishes another, and a custom code block still contains the company's old address. Each piece may be technically formatted, but together they describe three versions of the company.
Choose one authoritative source for the business name, URL, phone, logo, address, and hours. Then remove or correct duplicate output. Review the visible page at the same time so the labels and customer information agree.
A practical audit for an owner
- Ask who or what adds structured data: the theme, plugins, custom code, ecommerce system, or booking tool.
- Test the home page and important page templates with Google's current testing tools.
- Compare every important fact with the visible website and Google Business Profile.
- Review warnings in context instead of treating every optional field as an error.
- Recheck after a redesign, plugin change, move, rebrand, or major service update.
Know when to leave it alone
Don't add review markup for testimonials that Google doesn't allow to create a self-serving star display. Don't label hidden claims, unavailable services, or information customers cannot verify. If the current implementation is accurate, valid, and tied to a supported purpose, more code may not improve anything.
Ask for a plain-language record of what is installed and who maintains it. If a developer can't explain which business facts are being labeled, where they come from, and which Google feature they support, the owner can't tell when the implementation becomes stale.
Warnings aren't all equal. Some identify required information that blocks eligibility; others point to recommended fields that may not apply. Fix factual conflicts and critical errors first instead of adding unsupported information just to make a testing tool turn green.
Structured data belongs inside careful local SEO, with visible accuracy coming first. For the related page-writing approach, read how to write service pages for customers and AI search. If you don't know which plugin is describing your company or why warnings keep returning, a free strategy call can help you sort out what to keep, fix, or remove.
Sources
- Google Search Central: LocalBusiness structured data - https://developers.google.com/search/docs/appearance/structured-data/local-business
- Google Search Central: Organization structured data - https://developers.google.com/search/docs/appearance/structured-data/organization
- Google Search Central: General structured data guidelines - https://developers.google.com/search/docs/appearance/structured-data/sd-policies
- Google Search Central: Simplifying the search results page - https://developers.google.com/search/blog/2025/06/simplifying-search-results
